A PSQ posted by a user with 10k+ rep: 3755689

For deletion:

3753099

3702837

@JoséCarlosSantos Anyone can say "I tried". It means nothing when the "try" is not shown. After all, a cheater can easily copy-paste a question and rephrase a hint given as "I tried [insert hint here] but can't solve it.".

For closure:

3756282

[ SmokeDetector | MS ] Repeating characters in answer (81): formula for the nth term of this sequence? by ugiomoo on math.SE

I think that this PSQ should be closed fast, or it will attract answers.

It can be deleted now.

@JoséCarlosSantos I cast the first delete vote.